Changes in version 0.1.0 (2026-05-12)                  

  - Initial release.
  - make_certificate() renders a landscape PDF certificate with
    decorative borders, corner ornaments, optional laurels, an optional
    logo, and one or two signature blocks.
  - cert_theme() constructs a color palette; convenience presets
    cert_theme_classic(), cert_theme_formal(), and cert_theme_warm()
    cover common looks.
  - device = c("cairo_pdf", "pdf") argument lets the caller fall back to
    the base pdf device on systems without Cairo (e.g. macOS without
    XQuartz, stripped Linux containers).